phing:tldr:8c1b3

This is a command using Phing, a build automation tool for PHP projects.

Let's break down the command:

• phing is the command to execute the Phing build script.
• -D${property}=${value} is an option to set a property in the build script. The ${property} and ${value} need to be replaced with actual values. This allows you to pass variables to the build script, which can be used in tasks.
• ${task_name} is the name of the specific task to execute in the build script. This should be replaced with the actual task you want to run.

So, when you run the command, Phing will execute the build script and perform the task specified by ${task_name}. It will also set the property ${property} to the value ${value} so that it can be used within the build script.